* {
  box-sizing: border-box;
}
.topic-txt-textarea {
  width: 100%;
  padding: 0.3rem 0.4rem;
  background: #fff;
}
.topic-txt-textarea > textarea {
  width: 100%;
  height: 3rem;
}
.topic-txt-textarea .position {
  color: #4e4e4e;
}
.issue-img-list {
  margin-top: 0.3rem;
}
.issue-img-list > li {
  width: 24%;
  margin-left: 1.333%;
  margin-top: 0.1rem;
  overflow: hidden;
  position: relative;
}
.issue-img-list > li > img {
  width:100%;
  height:100%;
}
.issue-img-list > li:nth-child(4n+1) {
  margin-left: 0;
}
.issue-img-list .add-img {
  border: 1px solid #ddd;
}
.issue-img-list .add-img > label {
  width: 100%;
  height: 100%;
  display: block;
  position: relative;
}
.issue-img-list .add-img .icon-add {
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -10px;
  margin-top: -10px;
}
